ApsaraDB RDS offers four editions: Basic, High-availability, Cluster, and Enterprise. In addition, the ApsaraDB RDS console provides an portal for you to purchase PolarDB for MySQL clusters. This topic describes how to view the edition of an ApsaraDB RDS instance and provides a comparison between various editions.

For more information about the instance types that are supported by various editions, see Instance families.

View the edition of an RDS instance

You can log on to the ApsaraDB RDS console, find the RDS instance, and then navigate to the Basic Information page to view the edition of the RDS instance.

Comparison between various editions

Edition Description Scenario
Basic Edition Your database system consists of only one primary RDS instance, and computing is separated from storage. This edition is cost-effective.

For more information, see RDS Basic Edition.

  • Personal learning
  • Small-sized websites
  • Development and test environments for small- and medium-sized enterprises
High-availability Edition Your database system consists of one primary RDS instance and one secondary RDS instance. These instances work in the high-availability architecture. This edition is suitable for more than 80% of the actual business scenarios.

For more information, see High-availability Edition.

  • Production databases for large- and medium-sized enterprises
  • Databases in industries such as the Internet, Internet of Things (IoT), online retail, logistics, and gaming
Cluster Edition Your database system consists of one primary RDS instance, one secondary RDS instance, and up to seven read-only RDS instances. The primary and secondary RDS instances work in the high availability architecture. The read-only RDS instances are used to increase the read capability. This edition is developed based on the AlwaysOn technology. It is supported only for SQL Server. By default, if you select the Cluster Edition, your database system consists of only one primary RDS instance and one secondary RDS instance. You can create read-only RDS instances later based on your business requirements.

For more information, see Cluster Edition.

Production databases for large- and medium-sized enterprises, such as online retailers, automobile companies, and ERP providers
Enterprise Edition Your database system consists of one primary RDS instance and two secondary RDS instances. Data is synchronously replicated from the primary RDS instance to the secondary RDS instances. This allows you to ensure data consistency and finance-grade reliability.

For more information, see Enterprise Edition.

  • Important databases in the finance, securities, and insurance industries that require high data security
  • Important production databases for large-sized enterprises
PolarDB for MySQL PolarDB for MySQL delivers faster scaling, larger storage capacity, and lower replication latency.

For more information, see What is PolarDB?.

  • Production databases for large- and medium-sized enterprises
  • Databases in industries such as the Internet, IoT, online retail, logistics, and gaming
  • Important databases in the finance, securities, and insurance industries that require high data security

Features supported by various editions

Features

Create an RDS instance